中南林业科技大学学报

北京典型人工针阔混交林碳汇变化特征及其环境调控

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王永康 ¹ , 王迎 ² , 陈文婧 ³ , 周泽圆 ⁴ , 赵洪贤 ¹ , 刘康龙 ¹ , 查天山 ¹

中南林业科技大学学报 | 生态学 2026,46(10): 177-188

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中南林业科技大学学报 |生态学 2026 , 46 (10) : 177 -188

北京典型人工针阔混交林碳汇变化特征及其环境调控

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王永康¹, 王迎², 陈文婧³, 周泽圆⁴, 赵洪贤¹, 刘康龙¹, 查天山¹

作者信息

^1.北京林业大学　a. 林木资源高效生产全国重点实验室；b. 水土保持学院，北京　100083

^2.北京市大兴区林业工作站，北京　102600

^3.南京工业职业技术大学　艺术设计学院，江苏　南京　210023

^4.北京市园林绿化规划和资源监测中心，北京　101118

通讯作者:

查天山（tianshanzha@bjfu.edu.cn），教授，博士，博士生导师。

作者简介:

王永康（wykkk819665956@163.com），硕士研究生。

Characteristics of carbon sequestration changes and environmental regulation in a typical artificial coniferous and broad-leaved mixed forest in Beijing

Yongkang Wang¹, Ying Wang², Wenjing Chen³, Zeyuan Zhou⁴, Hongxian Zhao¹, Kanglong Liu¹, Tianshan Zha¹

Affiliations

^1.a. State Key Laboratory of Efficient Production of Forest Resources; b. School of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China

^2.Beijing Daxing District Forestry Workstation, Beijing 102600, China

^3.School of Arts and Design, Nanjing University of Industry Technology, Nanjing 210023, Jiangsu, China

^4.Beijing Landscape Planning and Resources Monitoring Center, Beijing 101118, China

出版时间: 2026-10-25 doi: 10.14067/j.cnki.1673-923x.2026.10.016

文章导航

摘要

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【目的】

探究人工针阔混交林净生态系统生产力（NEP）的变化特征及其环境调控，阐明北京典型人工针阔混交林生态系统碳汇功能，服务“双碳”目标。

【方法】

以北京大兴人工针阔混交林生态系统为研究对象，采用涡度相关技术（EC）全年（2023）连续观测其净生态系统生产力；同时，对光合有效辐射（PAR）、饱和水汽压差（VPD）、空气温度（T_a）、土壤含水量（SWC）等环境因子进行原位同步监测，采用随机森林模型计算环境因子的重要性得分，量化环境因子对人工针阔混交林NEP及碳汇的影响。

【结果】

能量闭合率为0.72，全年NEP平均日变化和季节变化均为单峰型，NEP峰值（11.95 μmol·m^-2·s^-1）出现在生长季（7月），生长季（3—11月）表现为碳汇，其净固碳量为384.83 g·m^-2；非生长季表现为碳源，净释碳量为1.18 g·m^-2，全年净固碳量为383.65 g·m^-2；NEP季节变化呈先增加后降低趋势，其变化主要受PAR、SWC、VPD和T_a因子调控（P<0.01）；PAR的影响最大，随机森林模型输出重要性得分为56.42，是影响NEP及碳汇的主导环境因子；各环境因子影响阈值分别为400 μmol·m^-2·s^-1、0.17 m³/m³、1.5 kPa和28 ℃。当SWC<0.1 m³/m³时，SWC先随T_a上升，当T_a>10 ℃时，后随T_a下降，T_a对NEP的间接调控阈值为10 ℃。

【结论】

该人工针阔混交林全年表现为中等强度碳汇，PAR是碳汇季节变化的主导调控因子，研究结果可为北京人工针阔混交林生态系统碳汇提升管理提供科学支持，观测数据是校验人工林碳汇模型数据库的重要补充。

关键词

针阔混交林 / 碳通量 / 涡度相关 / 随机森林 / 环境因子

Abstract

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【Objective】

This study aimed to explore the variation characteristics of net ecosystem productivity (NEP) and its environmental regulation in a typical artificial mixed coniferous and broad-leaved forest ecosystem in Beijing, clarify its carbon sequestration function, and to support the goals of carbon peaking and carbon neutrality.

【Method】

An artificial mixed coniferous and broad-leaved forest ecosystem located in Beijing was selected as the study site. Continuous in-situ observations of NEP were conducted throughout 2023 using the eddy covariance (EC) technique. Simultaneously, environmental factors, including photosynthetically active radiation (PAR), vapor pressure deficit (VPD), air temperature (T_a), and soil water content (SWC), were monitored. The random forest model was used to calculate the importance scores of these environmental factors and to quantify their impacts on NEP and carbon sequestration.

【Result】

The energy closure of the measurements was 0.72, The average daily and seasonal variations of NEP exhibited unimodal trends, with NEP peaking at 11.95 μmol·m^-2·s^-1 in July during the growing season (March–November). The ecosystem acted as a carbon sink during the growing season, with a net carbon sequestration of 384.83 g·m^-2, whereas it functioned as a carbon source in the non-growing season, releasing 1.18 g·m^-2. The total annual net carbon sequestration was 383.65 g·m^-2. Seasonal variations in NEP showed an initial increasing trend followed by a decrease, significantly influenced by PAR, SWC, VPD and T_a (P<0.01). Among these factors, PAR was the dominant environmental factor controlling NEP and carbon sequestration, with an importance score of 56.42 determined by the random forest model. The thresholds of environmental factors influencing NEP were 400 μmol·m^-2·s^-1 (PAR), 0.17 m³/m³ (SWC), 1.5 kPa (VPD), and 28 ℃ (T_a). Additionally, when SWC was below 0.1 m³/m³, it initially increased with rising T_a, but after exceeding 10 ℃, SWC decreased. The indirect regulatory threshold of T_a on NEP was thus identified as 10 ℃.

【Conclusion】

The studied artificial mixed coniferous and broad-leaved forest exhibited moderate carbon sequestration capacity. PAR was the primary factor controlling seasonal variations in carbon sequestration. The findings provide scientific support for managing carbon sink enhancement in artificial mixed coniferous and broad-leaved forest ecosystems in Beijing. Additionally, the observational dataset constitutes an important supplement for validating models used in forest carbon estimation.

Key words

coniferous and broad-leaved mixed forest / carbon flux / eddy covariance / random forest / environmental factor

引用本文

王永康, 王迎, 陈文婧, 周泽圆, 赵洪贤, 刘康龙, 查天山. 北京典型人工针阔混交林碳汇变化特征及其环境调控. 中南林业科技大学学报, 2026 , 46 (10) : 177 -188 . DOI: 10.14067/j.cnki.1673-923x.2026.10.016

Yongkang Wang, Ying Wang, Wenjing Chen, Zeyuan Zhou, Hongxian Zhao, Kanglong Liu, Tianshan Zha. Characteristics of carbon sequestration changes and environmental regulation in a typical artificial coniferous and broad-leaved mixed forest in Beijing[J]. Journal of Central South University of Forestry & Technology, 2026 , 46 (10) : 177 -188 . DOI: 10.14067/j.cnki.1673-923x.2026.10.016

基金

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国家重点研发计划项目(2020YFA0608103-01)

参考文献

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2026年第46卷第10期

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doi: 10.14067/j.cnki.1673-923x.2026.10.016

接收时间：2025-10-10
首发时间：2026-10-30
出版时间：2026-10-25

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收稿日期：2025-10-10
修回日期：2025-12-13

基金

国家重点研发计划项目(2020YFA0608103-01)

作者信息

^1.北京林业大学　a. 林木资源高效生产全国重点实验室；b. 水土保持学院，北京　100083

^2.北京市大兴区林业工作站，北京　102600

^3.南京工业职业技术大学　艺术设计学院，江苏　南京　210023

^4.北京市园林绿化规划和资源监测中心，北京　101118

通讯作者:

查天山（tianshanzha@bjfu.edu.cn），教授，博士，博士生导师。

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2种不同金属材料的力学参数

科 Family	属数 Number of genus	种数 Number of species	占总种数比例 Percentage of total species (%)	属 Genus	种数 Number of species	占总种数比例 Percentage of total species (%)
鹅膏菌科Amanitaceae	2	11	5.26	鹅膏菌属 Amanita	10	4.78
小菇科 Mycenaceae	2	12	5.74	丝盖伞属 Inocybe	5	2.39
多孔菌科 Polyporaceae	8	14	6.70	蜡蘑属 Laccaria	5	2.39
红菇科 Russulaceae	3	23	11.00	小皮伞属 Marasmius	6	2.87
				小菇属 Mycena	11	5.26
				光柄菇属 Pluteus	5	2.39
				红菇属 Russula	17	8.13
				栓菌属 Trametes	5	2.39

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